I try to keep a supply of signed copies at Barnes & Noble at Union Square in NYC. They ship worldwide. Call to make sure they have a signed copy: 212-253-0810. (If they do not, email me and I'll try to head down there soon: dave@davecullen.com )

Note: I love supporting indie bookstores, and The Strand used to be great about carrying my book and helping me keep signed copies, but since a staff change, that became problematic, and they typically just carry one or two copies now. (Strand contact info, or Columbine at their site).